Trouble scaling up my work with gradient grain textures
HI everyone!
Im currently wrapping up a personal project of mine and came across an issue. When i try to scale up my entire work from 4x6 to 18x24, the grain effects became smoother, which i dont like. The first picture below is the 4x6 and the second is scaled up to 18x24

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Is there a way for me to retain the texture quality from the first picture when scaling up to sizes such as 18x24? I really want that grainy, dirty and noisy look to it and im planning on making art prints out of this. Any suggestions?
I appreciate any help!
